Quack Documentation
A free Claude Code plugin that spends fewer tokens without changing how you work.
Quack is a free, open source plugin for Claude Code. It gives Claude a few short rules, tells you when a chat has grown expensive, maps your code so Claude reads only the lines it needs, and brings a team of five duck subagents, each on the model that fits its job.
Restart Claude Code. Then, once per project, run /quack:index and /quack:checkup.
Where to start
Start Here
What Quack is, how to install it, and your first five minutes.
How It Works
Hooks, skills and subagents, and where Quack writes things.
The Duck Team
Pia, Kit, Marco, Iris and Dante, and who gets which job.
Benchmark
The same tasks with and without Quack, with real numbers.
Reference
Settings, FAQ, troubleshooting and changelog.
Looking for the desktop app?
Quack used to be a desktop app. It is retired; see Desktop app.